Skeleton King is a STR carry that is ideal for beginner and novice players. His only active skill is a targeted stun that is impossible to miss/fail. The hero is very straightforward to play, you want to prioritize farm and take whatever kills come your way. Make sure you do not go ganking as SK is not a ganker and needs farm to be useful in the later stages of the game. Skill build:
1. Hellfire Blast
2. Stats
3. Hellfire Blast
4. Stats
5. Hellfire Blast
6. Ult
7. Hellfire Blast
Max Critical Strike next taking ult whenever necessary and maybe 1 level of Aura if you feel you need it before. Common item choices:
Hand of Midas
Power Treads
Armlet
Desolator
Assault Cuirass
Black King Bar